create game result page

[cscorley]

if game results instead held collections of players instead of teams, there wouldn't be a need for creating teams every time a player switch-up occurs

this means a create game result page needs to exist, because just entering names all the time would also be annoying in the Django admin

would be nice if page allowed to select previously entered teams on the event before submission

if that can be done, teams can be generated on the fly -- or if a team is unmodified, reused -- no models would need to be modified

[cscorley]

current state gets us almost there. game result form should only allow teams on the current event

[cscorley]

booyah